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DRV81646

現行

具有 H/W、SPI 和可配置電壓轉換速率和切斷持續時間的 65V、4A 4 通道低壓側驅動器

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產品規格表

DRV81646

現行
產品規格表 立即訂購

產品詳細資料

Control interface Hardware (GPIO), SPI Control mode PWM Vs (max) (V) 65 Vs (min) (V) 4.5 Vs ABS (max) (V) 70 Peak output current (A) 1.6 Operating temperature range (°C) -40 to 125 Rating Catalog Topology LSS
Control interface Hardware (GPIO), SPI Control mode PWM Vs (max) (V) 65 Vs (min) (V) 4.5 Vs ABS (max) (V) 70 Peak output current (A) 1.6 Operating temperature range (°C) -40 to 125 Rating Catalog Topology LSS
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4 HVSSOP (DGQ) 24 29.89 mm² 6.1 x 4.9
  • Four-channel integrated low-side switches
    • 140mΩ RDS(ON) at 25°C
    • Operating supply voltage range: 4.5V to 65V (70V absolute maximum)
    • Selectable current limit from 0.5A up to 4A per channel
    • Fast PWM switching up to 500kHz
  • Flexible interface options:
    • Hardware interface with independent channel PWM input
    • SPI enables reduction in GPIO and isolation overhead for high channel count designs
  • Integrated catch diodes for flexible decay modes with optional external TVS/Zener diode as alternate current path on switch turnoff
  • Slew rate configurable (100ns – 1500ns) enables both slow/fast switching applications
  • Diagnostic feedback
    • MCU fault interrupt signal (nFAULT)
    • Per channel fault report available through SPI
  • Protection Features
    • User settable current limit
    • Independent overtemperature and overcurrent protection for each channel
    • Configurable overcurrent cut-off delay (COD) 0.5ms-2ms
  • Four-channel integrated low-side switches
    • 140mΩ RDS(ON) at 25°C
    • Operating supply voltage range: 4.5V to 65V (70V absolute maximum)
    • Selectable current limit from 0.5A up to 4A per channel
    • Fast PWM switching up to 500kHz
  • Flexible interface options:
    • Hardware interface with independent channel PWM input
    • SPI enables reduction in GPIO and isolation overhead for high channel count designs
  • Integrated catch diodes for flexible decay modes with optional external TVS/Zener diode as alternate current path on switch turnoff
  • Slew rate configurable (100ns – 1500ns) enables both slow/fast switching applications
  • Diagnostic feedback
    • MCU fault interrupt signal (nFAULT)
    • Per channel fault report available through SPI
  • Protection Features
    • User settable current limit
    • Independent overtemperature and overcurrent protection for each channel
    • Configurable overcurrent cut-off delay (COD) 0.5ms-2ms

The DRV81646 is a four-channel low-side switch driver that operates from 4.5V to 65V and supports a wide range of load currents. The device integrates four low-side switches with a RDS(ON) of 140mΩ, each with a freewheeling diode to the VCLAMP pin. This feature allows the user to either recirculate current or connect an external TVS for inductive load turn-off.

The device can be controlled through a hardware GPIO interface or standard 4-wire SPI. Each channel features individual overtemperature protection, and an analog current limit adjustable with an external resistor on the ILIM pin. There is an optional cut-off delay (COD) configuration which limits the duration of a current-limiting condition on the respective channel, helping to prevent damage to the device or the load. The output slew rates are configurable by setting a resistor on the RSLEW/CNTL pin, providing further flexibility in the control of the output switches. The device has an INRUSH mode boosting the current limit threshold for capacitive loads.

The DRV81646 provides a fault output pin (nFAULT) to indicate fault conditions, and per-channel fault status can be monitored in SPI mode. This feature allows the user to quickly identify and respond to any faults that occur.

The DRV81646 is a four-channel low-side switch driver that operates from 4.5V to 65V and supports a wide range of load currents. The device integrates four low-side switches with a RDS(ON) of 140mΩ, each with a freewheeling diode to the VCLAMP pin. This feature allows the user to either recirculate current or connect an external TVS for inductive load turn-off.

The device can be controlled through a hardware GPIO interface or standard 4-wire SPI. Each channel features individual overtemperature protection, and an analog current limit adjustable with an external resistor on the ILIM pin. There is an optional cut-off delay (COD) configuration which limits the duration of a current-limiting condition on the respective channel, helping to prevent damage to the device or the load. The output slew rates are configurable by setting a resistor on the RSLEW/CNTL pin, providing further flexibility in the control of the output switches. The device has an INRUSH mode boosting the current limit threshold for capacitive loads.

The DRV81646 provides a fault output pin (nFAULT) to indicate fault conditions, and per-channel fault status can be monitored in SPI mode. This feature allows the user to quickly identify and respond to any faults that occur.
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類型 標題 日期
* Data sheet DRV81646 : 65V Four-Channel Low-side Driver with Hardware, SPI, and Configurable Slew Rate and Cut-off Duration datasheet (Rev. A) PDF | HTML 2025年 12月 10日
Certificate DRV81646EVM EU Declaration of Conformity (DoC) 2025年 10月 22日
White paper 軟體定義車輛將汽車電子的未來推入正軌 (Rev. B) PDF | HTML 2025年 1月 29日

設計與開發

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開發板

DRV81646DGQEVM — DRV81646 評估模組（DGQ 封裝）

DRV81x4x 評估模組 (EVM) 可用於評估 DRV81545、DRV81646 和 DRV81646DGQ 裝置。EVM 已進行程式設計，可立即使用並開始驅動負載。為了簡化控制和配置，EVM 附帶圖形使用者介面 (GUI) 應用程式。
使用指南: PDF | HTML
TI.com 無法提供
開發板

DRV81646EVM — DRV81646 評估模組

DRV81x4x 評估模組 (EVM) 可用於評估 DRV81545、DRV81646 和 DRV81646DGQ 裝置。EVM 已進行程式設計，可立即使用並開始驅動負載。為了簡化控制和配置，EVM 附帶圖形使用者介面 (GUI) 應用程式。
使用指南: PDF | HTML
TI.com 無法提供
韌體

DRV81X4X-EVM-FIRMWARE — DRV81x4x-EVM FIRMWARE

DRV81x4x-EVM FIRMWARE
支援產品和硬體

支援產品和硬體

產品
電磁線圈驅動器
  • DRV81545 — 具有獨立過溫與過電流保護功能的 55V、2A 4 通道低壓側驅動器
  • DRV81646 — 具有 H/W、SPI 和可配置電壓轉換速率和切斷持續時間的 65V、4A 4 通道低壓側驅動器
硬體開發
開發板
下載選項
開發模組 (EVM) 的 GUI

DRV81X4X-EVM-GUI — DRV81X4X-GUI

DRV81X4X-GUI
支援產品和硬體

支援產品和硬體

產品
電磁線圈驅動器
  • DRV81545 — 具有獨立過溫與過電流保護功能的 55V、2A 4 通道低壓側驅動器
  • DRV81646 — 具有 H/W、SPI 和可配置電壓轉換速率和切斷持續時間的 65V、4A 4 通道低壓側驅動器
硬體開發
開發板
啟動 下載
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HTSSOP (PWP) 20 Ultra Librarian
HVSSOP (DGQ) 24 Ultra Librarian
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